Electric signaling.



.NO 849,171. v PATENTED AP 2', 1907.

J. B. STRUBLE. ELECTRIC SIGNALING.

A' PLIGATIQN FILED DEG. 3/1902. RENEWED JAN. 17, 1906. I

- 2 SHEETS-SHEET '1.

No. 849,171. PATENTED APR. 2, 1907. J. B. STRUBLE.

ELECTRIC SIGNALING.

APPLICATION FILED DEC. 3, 1902. RENEWED JAN. 17. 1906.

2SHEETS-SHEE1 2.

wsmessss:

BEHVEEHEOR PAT" OFFEQE- JACOB B. STR L'BLE, OF WILKINSBURG, PENNSLVANLA, XSSIGNOR TO THE UNION SWITCH & SIGNAL COMPANY, 02: HWISSVATJt;PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ELECTFUG SlGINALING.

T (LZZ whom it may concern:

Be it known that 1, JACOB B. STEUBLE, residing at Nilkinsburg, in thecounty of Allegheny and State of Permsylvania, a citizen of the UnitedStates, have invented or discovered certain new and useful Improvementsin Electric Signaling, of which the following is a specification.

In application filed December 3, 1902,

Serial No. 1

claimed certain improvements in and relating to railway signalinginvolving the -employment of alternating current in the trackcircuitsfor the operation or control of the i5 signals and having for its objectthe controlling of a signal or signals of one section by a signal orsignals of another section through 1 a modification or change in one ormore of the characteristics of the current in the 3 track-circuit.

The invention described herein has for its object a construction andcombination of-- ap rihratus whereby a signal or signais of 030- sectioncan be controlled in accordance with 2 5 the conditions on anothersection by etle cting a displacement of the normal phase relation of talternating signaling current in the track circuit.

The invention is hereinafter more fully described and claimed.

in the accompanying drawings, Figure l is a diagrammatic view of aportion of a rail n'ay-iraclc, showing the block-sections uuoc cupicdand the signals clear and embodying 55 my invention. Fig. 2 is a similarview show- 1 ing one of the traclosections occupied and the signalsindicating such condition, and Fig. 3 is a similar view illustrating amodified form oi signal-controlling motor.

Similar reference characters designate i corresponding parts in all ofthe figures. i

In the practice of my invention the line of I rails 1, which is madeelectrically continuous,

is connected to one pole ot'an alternating 5 generator 6, which has itsother terminal connected to the t'oc lwire 7. The other line of l railsis divided by suitable insulation into a series of sections 2, 3, &c.,of suitable length. Home and distant signals 4 and 5 on the same postare arranged at the entrance ends or'zthe sections and are adapted to beoperaled either directly by the currents in the trackcircuit, as shownand described in the l Specification of Letters Patent.

circuits.

33,711, I have described and i' feed-wire 7. 3 former has one terminalconnected to the Patented Aprilz 1905A Serial No. 296,445.

1 application. above referred to, or the operating m chanisi 17 and 18oiflthe signals are included in independent circuits controlled throughsuitable mechanisms bythe tracklt is preferred when independentsignal-operating circuits are employed that they should derive theircurrents from the generator fi by including the primary of a transformer19 in the circuit of the generator 6 and the secondary of thetransformer in the signal-operating c rcuits, as shown. Thesesignal-circuits contain in ake-and-break mech- 6 5 anisms consisting ofcontact-plates 32 and 33 and movable fingers 30 and 31, connected tomovable members of motors operating as hereinafter described At eachsection the primary of a trans- 7o former A has its terminals connected,re-

spectively, to the continuous rail 1 and the The secondary of thetranscontinuous line of rails 1, while the opposite terminal isconnected to one of a pair of contact-plates 11 the member beingconnected 'to one term nal of a reactance or phasedisplacing coil 40,which has its other terminal connected to the rail-section 2.

The plates of the pair 11 are arranged so as to be electricallyconnected by the movable member 12 of the circuit-shifting mechamsm,which is operated in accordance with the conditions existing on sect-ion3 and preferably by the home signal 4. This movable member 12whenshifted from the plates 11 will connect a pair of plates 10,

1 one of which is connected to an intermediate terminal of the secondary9 of the transo 1 former and the other plate to the rail-sec.

1 tion 2 in such a manner as to form a circuit around the reactive coil40. By changing the ratio of the transformer in the manner stated, whichis similar to that (escribed and shown in the application ref vrred to,theilowcring of the power factor due to the phase displacement whenreactanoe 40 is in circuit is compensated ior. h resistance 13 isinterposed in the track-circuit, so as ion to prevent an excessive flowof currentin the track when latter is short-circuit-ed by a train. I

- The translating device or motor B consists of cores or poles 24,having the coils in series with the track-circuit of section 2 a'closedcircuit 54.

and a disk 29 pivotally mounted so as to be movable between the poles.The poles of the motor are slotted, forming sections, i

one of which on eachT fiole issurroimded by e motor'is connected to thefinger -30, controlling the OllCulbOf home signal 4, and is soconstructed and rodevice or motor C has one of its ole-pieces,

as 41, surrounded by a coil 42 o comparatively few turns, s'aidcoilbeing in series with the coil '25 of motor B and respons veto-current-wave. The other poleiece 44 iii-surrounded by a coil 43 ofrelative y many turns and having its terminals connected across thetrack-circuit ofrse'ction and responsive to pressure or voltage wave.This mechanism is similar to that found in the wattmeter and crates onthe same principle. The mova le member or disk 29. of the motor isconnected to the finger 31, controlling the circuitof distant signal 57The motor is so designed that when the. voltage and current on thetrack-circuit are in phase 5. 6., when themovable member 12 connects theplates 10, the signal 4 of section 3 coin at danger,-the disk 29 willnot be shi tecl and the circuit'of distant signal will be open and thesignal at caution; but when the contact-plates 11 are connected by themovement of signal 4' to" clear the voltage and current in thetraclecircuit of section will be thrown out of phase and a shiftingfield produced, in motor (7, thereby causin'g such a movement of disk29* as to bring finger 31' in contact with plate 33, closing u thecircuit of'signal 5, causing the same to go to clear position.

In order to prevent any disturbing influence due to reactancc which themagnets having pole-pieces 24 and 4 with their coils may have on thepha'se relation in the cirsuit, so as, to partially nullify theoperation ofthe motor 0, a condenser 45 may be -m ployed.

In order to prevent the reactance or phase displacer 40 from producing aphase displacement in the main feed-wire 7, and thereby produceobjectionable effects on other trackcircuits signal mechanism suppliedby the feed-wire, a condenser 46 may he placed in circuit with theprimary or secondary of the transformer A or in circuit with both.

In lieu of using two controlling-1n0tors,

as shown. in Figs. 1 and 2, and maintainin a uniform power factor in thetrack-circuit y changing the ratio of the transformer simuler intotaneous with a change of phase the construc- -tion andarran ement shownin Fig. '3 may .or both cores is surrounded by coils and '36 in'aclosedcircuit. 7

In lieu of changing the ratio of the transformer with the c iange ofphasethe'ratio of the transformer ismaintained constant, so

that a change of the power factor will-result when'the reactance-coil isconnected in circuit as described i. 'e., the active current is reduced;The contact-fin ers 30 and 31 are connected to the disk 29 y a linkwhich has a slotted connection with a weight 38, and'the motor isso-constructed that when the power factor of the current in thetrackcircuit is high-'i. 6., when the reactance 40 is cut out, thesignal 4 being clear-suflicient power will be developed to raise theweight and bring fingers 30 and 31into contact with the plates 32 and33, closing the circuits of Signals 4' and 5, causing them to indicateclear. When si nal'4 goes to danger,. the reactance will e connected inseries in the track-current, thereby changing thenormal phase relationof the voltage, With the" current accompanied with a reduction of thepower factor or active current, so that the motor can no lon 'or sustainthe Weight, and the finger 31 wi 1 be shifted from contact with plate33, thereby breaking the circuit of signal 5, which will then go tocaution..

I claim herein as my invention- 1. In a signaling apparatus forrailways, the combination of a source of alternating currents, atrack-circuit for said currents,

Ttwo signaling mechanisms operative by said track-cirouit currents, andmeans for changing the'normal phase relation of the voltage with thecurrent for effecting an operation of one of-said mechanisms and not theother, substantially as set forth.

2. In asignaling apparatus for railways, the combination of a source ofalternating currents, a track-circu t for said currents, a signalingmechanism operative by such traclccircuit currents regardless of thephase relation of the voltage with tho track-circuit current, a signalmechanism oporat ivo by such currents on a displacomon t ol t he phaserelation of lhe voltage with the current and means for cflectiug suchphase displacement, subsl ant ially as set forth.

3. in a signaling system, the combination ofa luhnc signal, a distantsignal for the home. signal, a track-circuit including a relay "andsource ofalternating current for controlling each signal, and means forchanging the phase of alternating current in one trackcircuit by theother track-circ roo stem; 1 as pf eifilgrrility of signals, etreck-ciim'iit and of a. home and distant signal located at theg- :reisame point, a single track-circuit and two renifljls; 9d means forsupplying alternating lays for controlling the home and distant sig-fcurrents of differen phase relation to said nals, a source ofalternating current for said mink-Circuit to control the signals atdiffertrack-cirouit to which one ofsaidrelays is ent tinis. responsiveto operate one of said relays and 4. In a signaling system, thecombination;

In testixhony whereof I have hereunto set not the other, and a secondsource of current my hand. for said track-circuit of different haserelc- JACOB B. STRUBLE. tion and to which the other ofseidre'lays isWitnesses:

DARWIN S. WoLooTT,

responsive. t

F. E. GAITHER.

5. In a'sig'naling'system, the combinatmn device for controlling both ofsaid sig-

